Initial inconsistencies in Sitzlack’s story led prosecutors to ask for probable cause for domestic violence murder at a court hearing in 2023. Police carried out “numerous search warrants” over months, but there was not enough evidence to disprove Sitzlack’s self-defense argument, McNerthney said. He was never charged in that case.

The arrest comes after a violent incident early Wednesday morning in the University District. Around 3 a.m., 59-year-old bus driver Shawn Yim was fatally stabbed during an altercation with Sitzlack aboard a King County Metro bus near the intersection of 15th Avenue Northeast and Northeast 41st Street.

FOX 13 is now hearing from two of the Metro bus drivers who helped Seattle Police arrest the suspect wanted in connection to the deadly stabbing of Shawn Yim.

Richard Sitzlack, the man accused of stabbing Metro bus driver Shawn Yim to death, is now facing first-degree murder charges.

Richard Sitzlack, 53, has been arrested as the prime suspect in the death of Shawn Yim, a 59-year-old bus driver stabbed while on shift near the University of Washington in Seattle last Wednesday. The three-day manhunt came to an end after fellow driver Timmothy Nelson recognized a sleeping passenger wearing clothes that matched the suspect’s description,